Administrator's Guide - Kerio Software Archive

18.1 Routing table
Route Types
The following route types are used in the Kerio Control routing table:
• System routes — routes downloaded from the operating system’s routing table
(including so called persistent routes). These routes cannot be edited some of them
can be removed — see the Removing routes from the Routing Table section).
• Static routes — manually defined routes managed by Kerio Control (see below). These
routes can be added, modified and/or removed.
The checking boxes can be used to disable routes temporarily —such routes are
provided in the list of inactive routes. Static routes are marked with an S icon.
• VPN routes — routes to VPN clients and to networks at remote endpoints of
VPN tunnels (for details, see chapter 23). These routes are created and removed
dynamically upon connecting and disconnecting of VPN clients or upon creating and
removing of VPN tunnels. VPN routes cannot be created, modified nor removed by
hand.
• Inactive routes — routes which are currently inactive are showed in a separate section.
These can be static routes that are temporarily disabled, static routes via an interfaces
which has been disconnected or removed from the system, etc.
Static routes
Kerio Control includes a special system for creation and management of static routes in the
routing table. All static routes defined in Kerio Control are saved into the configuration file
and upon each startup of the Kerio Control Engine they are added to the system routing table.
In addition to this, these routes are monitored and managed all the time Kerio Control is
running. This means that whenever any of these routes is removed by the route command, it
is automatically added again.
Note:
1. The operating system’s persistent routes are not used for implementation of static routes
(for management of these routes, Kerio Control uses a proprietary method).
2. If a static connection uses a dial-up, any UDP or TCP packet with the SYN flag dials the
line. For detailed information, see chapter 6.2.
Definitions of Dynamic and Static Rules
Click on the Add (or Edit when a particular route is selected) button to display a dialog for
route definition.
245